20212221320122 has 16 divisors (see below), whose sum is σ = 32651175997440. Its totient is φ = 9328527636912.

The previous prime is 20212221320119. The next prime is 20212221320131. The reversal of 20212221320122 is 22102312221202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20212221320093 and 20212221320102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6606418 + ... + 9168925.

It is an arithmetic number, because the mean of its divisors is an integer number (2040698499840).

Almost surely, 2^{20212221320122} is an apocalyptic number.

20212221320122 is a deficient number, since it is larger than the sum of its proper divisors (12438954677318).

20212221320122 is a wasteful number, since it uses less digits than its factorization.

20212221320122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15824637.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20212221320122 its reverse (22102312221202), we get a palindrome (42314533541324).

The spelling of 20212221320122 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-one million, three hundred twenty thousand, one hundred twenty-two".